Measurement and Analysis of Micropore Aeration System's Oxygenating Ability Under Operation Condition in Waste Water Treatment Plant
污水厂微孔曝气系统工况下充氧性能测试与分析

Using the aeration pool in the fourth-stage at Wuxi Lucun Waste Water Treatment Plant (WWTP) as experimental setup, off-gas method was selected to measure the oxygenating ability parameters of micropore aerators in a real WWTP operating condition and these values were compared with those in fresh water to evaluate the performance of the micropore aerators. Results showed that the micropore aerators which were distributed in different galleries of the aeration pool had significantly different oxygenating abilities under operation condition. The oxygenating ability of the micropore aerators distributed in the same gallery changed slightly during one day. Comparing with the oxygenating ability in fresh water, it decreased a lot in the real aeration pool, in more details, under the real WWTP operating condition, the values of oxygen transfer coefficient KLa, oxygenation capacity OC and oxygen utilization Ea decreased by 43%, 57% and 76%, respectively.